Most recent preprints and publications from the lab can be found on Prof. Kumar’s Google Scholar profile.

Peer-reviewed Journal Publications


66. R. Dikshit, N. Gupta and Aloke Kumar, “Microbial Endeavours towards Extra-terrestrial settlements”, J. IISc (Accepted)

65. S. Sharma, S. J. Rao, Navin K. Chandra, A. Kumar,  Saptarshi Basu, and C. Tropea “Depth from defocus technique applied to unsteady shock-drop secondary atomization.” Experiments in Fluids, 64 (2023)


64. S. Sharma, Navin K. Chandra, Saptarshi Basu, and Aloke Kumar “Advances in droplet aerobreakup.” The European Physical Journal Special Topics (2022)

63. Gannena, KS Raghuram, D. Chaitanya Kumar Rao, Durbar Roy, Aloke Kumar, and Saptarshi Basu. “Bubble dynamics and atomization in evaporating polymeric droplets.” Journal of Fluid Mechanics 951 (2022)

62. V. Dawara, N. Gupta, A. Dey, A. Kumar, K. Viswanathan, “Pore-microcrack interaction governs failure in bioconsolidated space bricks”, Ceramics International, 48 (23), 35874-35882 (2022) 

61. Abhijit Chandra Roy, Navin Kumar, Shreyas Bangalore Subramanya, Ananya Gupta, Aloke Kumar, Aveek Bid, and Venkatakrishnan Venkataraman “Large-area 3D printable soft electronic skin for biomedical applications”, ACS Biomater. Sci. Eng. (Accepted) 

60. N. K. Chandra, K. Lahiri and Aloke Kumar*,”Contact angle hysteresis can modulate the Newtonian rod-climbing effect”, 34, 093110 (2022) 

59. S.C. Varma, D. Dasgupta, and Aloke Kumar*,”Elasticity can affect droplet coalescence”, Physics of Fluids, 34, 093112 (2022) 

58. Dikshit, Rashmi, Nitin Gupta, Arjun Dey, Koushik Viswanathan, and Aloke Kumar* “Microbial induced calcite precipitation can consolidate martian and lunar regolith simulants.” PloS one 17, no. 4 (2022)

57. S.C. Varma, A. S. Rajput, and Aloke Kumar*, “Rheocoalescence: Relaxation time through coalescence of droplets”, Macromolecules, 55 (14), 6031-6039 (2022) 


56. Dikshit, Rashmi, Arjun Dey, and Aloke Kumar. “Sporosarcina pasteurii can Efficiently Precipitate Calcium Carbonate at High Salt Concentration.” Geomicrobiology Journal 39, 2 (2022)

55. Varma, Sarath Chandra, Aniruddha Saha, and Aloke Kumar. “Coalescence of polymeric sessile drops on a partially wettable substrate.” Physics of Fluids 33, 12 (2021)

54. Sharma, Shubham, Awanish Pratap Singh, S. Srinivas Rao, Aloke Kumar, and Saptarshi Basu. “Shock induced aerobreakup of a droplet.” Journal of Fluid Mechanics 929 (2021)

53. S. S. Kallapur, R. Dikshit, A. Dey, A. Nandi, V. Singh, K. Viswanathan, A. Kumar, “Microbial Analysis in Space: Modular device for biological experiments in microgravity”, Acta Astronautica, 188, 473-478 (2021)

52. M. Krsmanovic, D. Biswas, H. Ali, A. Kumar, R. Ghosh. A. K. Dickerson, “Hydrodynamics and surface properties influence biofilm proliferation”, Advances in Colloid and Interface Science, 288, 102336 (2021)

51. U. U. Ghosh, H. Ali, R. Ghosh, A. Kumar, “Bacterial streamers as colloidal systems: Five grand challenges”, Journal of Colloid and Interface Science, 594, 265-278 (2021)

50. GS Raghuram, B Lalit, S. Basu, A. Kumar, “Suppression of coffee ring effect in high molecular weight polyacrylamide droplets evaporating on hydrophobic surfaces”, Colloids and Surfaces A, 612, 126002 (2021)


49. S. Kaushal, A. S. Rajput, S. Bhattacharya, M. Vidyasagar, A. Kumar, M. K. Prakash, S. Ansumali, “Estimating Hidden Asymptomatics, Herd Immunity Threshold and Lockdown Effects using a COVID-19 Specific Model”, PloS one, 15 (12), e0242132 (2020)

48. S. C. Varma, A. Saha, S. Mukherjee, A. Bandopadhyay, A. Kumar, S. Chakraborty, “Universality on coalescence of polymer fluids”, Soft Matter, 16, 10921-10927 (2020)

47. S. Ansumali, S. Kaushal, A. Kumar, M. K. Prakash and M. Vidyasagar, “Modelling a pandemic with asymptomatic patients, impact of lockdown and herd immunity, with applications to SARS-CoV-2”, Annual Reviews in Control, 50, 432-447 (2020)

46. R. Dikshit, A. Jain, A. Dey, and A. Kumar,”Microbially induced calcite precipitation using Bacillus velezensis with guar gum”, PloS One, 15 (8), e0236745 (2020)

45. R. Dikshit, A. Dey, N. Gupta, S. C. Varma, I. Venugopal, K. Viswanathan, A. Kumar,”Space Bricks: From LSS to machinable structures via MICP”, Ceramics International, In Press, DOI: 10.1016/j.ceramint.2020.07.309

44. M. K. Prakash, S. Kaushal, S. Bhattacharya, A. Chandran, A. Kumar, S. Ansumali,”A minimal and adaptive prediction strategy for critical resource planning in a pandemic”, Physical Review E, 102, 021301 (2020)

43. T. Ghosh, J. Chen, A. Kumar, T. Tang, C. Ayranci,”Bio-cleaning improves mechanical properties of lignin-based carbon fibers”, RSC Advances, 10, 22983-22995 (2020)

42. D. Badal, A. V. Jayarani, M. A. Kollaran, A. Kumar and Varsha Singh,”Pseudomonas aeruginosa biofilm formation on endotracheal tube requires multiple two-component systems”, J. Medical Microbiology, (Editor’s Choice)

41. R. Paul,T. Ghosh, T. Tang, A. Kumar, “Reply to the Comment on “Rivalry in Bacillus subtilis Colonies: Enemy or Family?””, Soft Matter, 16, 3347-3349 (2020)


40. N. Debnath, A. Kumar, T. Thundat and, M. Sadrzadeh, “Investigating fouling at the pore-scale using a microfluidic membrane mimic filtration system”, Scientific Reports, 9, 10587 (2019)

39. R. Paul,T. Ghosh, T. Tang, A. Kumar, “Rivalry in Bacillus subtilis Colonies: Enemy or Family?”, Soft Matter, 15, 5400-5411 (2019) (Back-Cover Art)

38. T. Ghosh, T-D. Ngo, A. Kumar, C. Ayranci, T. Tang, “Cleaning carbohydrate impurities from lignin using Pseudomonas fluorescens”, Green Chemistry, 21, 1648-1659 (2019) (Front-Cover Art)

37. T. Ghosh, S. Bhaduri, C. Montemagno, A. Kumar, “Sporosarcina pasteurii can form nanoscale calcium carbonate crystals on cell surface”, Plos One, 14(1):e0210339 (2019)


36. I. Biswas,M. Sadrzadeh, A. Kumar, “Impact of bacterial streamers on biofouling of microfluidic filtration systems”, Biomicrofluidics, 12, 044116 (2018)

35. I. Biswas, R. Ghosh, M. Sadrzadeh, A. Kumar, “Near wall void growth leads to disintegration of colloidal bacterial streamer”, Journal of Colloid and Interface Science, 522,249-255 (2018) (Pre-print available at


34. N. Debnath, M. Hassanpourfard, R. Ghosh, J. Trivedi, T. Thundat, Mohtada Sadrzadeh,A. Kumar, “Abiotic streamers in a microfluidic system”, Soft Matter,13, 8698-8705 DOI: 10.1039/c7sm01771e, (2017) (Pre-print available at (Back-Cover Art)


33. P. Barai, A. Kumar, P. P. Mukherjee, “Modeling of mesoscale variability in biofilm shear behaviour”, Plos One, 11, e0165593 (2016)

32. M. Hassanpourfard, R. Ghosh, T. Thundat, A. Kumar, “Dynamics of bacterial streamers induced clogging in microfluidic devices”, Lab on a Chip, 16, 4091-4096 (2016) (Back-Cover Art)

31. I. Biswas, R. Ghosh, M. Sadrzadeh, A. Kumar, “Nonlinear deformation and localized failure of bacterial streamers in creeping flows”, Scientific Reports, 6, 32204 (2016)(Article highlighted by

30. M. F. Khan,N. Miriyala, J. Lee, M. Hassanpourfard, A. Kumar, T. Thundat, “Heat capacity measurements of sub-nanoliter volumes of liquids using bilateral microchannel cantilevers”, Applied Physics Letters, 108, 211906 (2016)

29. B. Gheshlaghi, H. Nazaripoor, A. Kumar, and M. Sadrzadeh, “The Effect of Intrinsic Angular Momentum in the Capillary Filling Dynamics of Viscous Fluids “, J. Colloid & Interface Science, 479, 80-86 (2016)

28. B. Gheshlaghi, H. Nazaripoor, A. Kumar, and M. Sadrzadeh, “Analytical solution for transient electroosmotic flow in a rotating microchannel”, RSC Advances, 6, 17632 (2016)


27. S. Bhaduri, N. Debnath, S. K. Mitra, Y. Liu and A. Kumar*, “Microbiologically induced calcite precipitation mediated by Sporosarcina pasteurii”, Journal of Visualized Experiments, 110, e53253 (2016)

26. M. Hassanpourfard, Z. Nikakhtari, R. Ghosh, S. Das, T. Thundat, Y. Liu and A. Kumar*, “Bacterial floc mediated rapid streamer formation in creeping flows”, Scientific Reports, 5, 13070 (2015) (Also available at arXiv:1504.00098) (Article highlighted by


25. K-C Wang, A. Kumar, S.J. Williams, N.G. Green, K.C. Kim and H-S. Chuang, “An optoelectrokinetic technique for programmable particle manipulation and bead-based biosignal enhancement”, Lab on a Chip, 14, 3958 (2014) (Back Cover Article)

24. R. Ghosh, A. Kumar, A. Vaziri, “Type-IV pilus deformation can explain retraction behaviour “, Plos One, 9 (12) e114613 (2014) (Also available at arXiv:1409.5472)

23. A. Karimi, D. Karig, A. Kumar, A. Ardekani, “Interplay of Physical Mechanisms and Biofilm Processes: Review of Microfluidic Methods”,  Lab on a Chip, 15, 23-42 (Lab on a Chip 2015 Most Downloaded Articles)

22. M. Hassanpourfard, X. Sun, A. Valiei, P. P. Mukherjee, T. Thundat, Y. Liu, A. Kumar, “Protocol for biofilm streamer formation in a microfluidic device with micro-pillars”, Journal of Visualized Experiments, 90, e51732 (2014)

21. S. Das, A. Kumar, “Formation and post-formation dynamics of bacterial biofilm streamers as highly viscous liquid jets”, Scientific Reports, 4, 7126 (2014) (Also available at arXiv:1312.6056)


20. A. Kumar, D. Karig, R. Acharya, S. Neethirajan, P. P. Mukherjee, S. T. Retterer, M. J. Doktycz, “Microscale confinement features in microfluidic devices can affect biofilm formation”, Microfluidics and Nanofluidics, 14, 895 (2013)

19. A. Valie, A. Kumar, P. P. Mukherjee, Y. Liu, T. Thundat, “A web of streamers: biofilm formation in a porous microfluidic device”, Lab-on-a-chip, 12 , 5115 (2012) (featured as HOT article )

18. J-S Kwon, S. P. Ravindranath, A. Kumar , J. Irudayaraj, S. T. Wereley, “Opto-electrokinetic manipulation technique for high-performance on-chip biological assay”, Lab-on-a-chip, 12 , 4955 (2012) (Cover Art Article ;also listed in ‘Top 10%’ Articles in Nov 2012; Highlighted by Nature Photonics, 7, 12 (2012))

17. A. Kumar, S. J. Williams, H-S. Chuang, N.G. Green and S. T. Wereley, “Hybrid opto-electric manipulation in microfluidics – opportunities and challenges”, Lab-on-a-chip, 11 , 2135 (2011) (Cover Art Article; also HOT Article )

16. A. Kumar, N. P. Mortensen, P. P. Mukherjee, S. T. Retterer and M.J. Doktycz, “Electric field induced bacterial flocculation of Enteroaggregative Escherichia coli 042”, Applied Physics Letters, 98 , 253701 (2011) (Cover Art Article; also featured in Virtual Journal of Biological Physics Research, July 1 2011 Issue)

15. A. Kumar , C. Cierpka, S. J. Williams, S. T. Wereley, “3D3C velocimetry measurements of an electrothermalmicrovortex using wavefront deformation PTV and a single camera” , Microfluidics andNanofluidics, 10, 355 (2011)


14. A. Kumar , H-S. Chuang, S. T. Wereley, “Dynamic manipulation by light and electric fields: micrometer particles to microliter droplets”, Langmuir, 26 , 7656 (2010)

13. A. Kumar , J-S. Kwon, S. J. Williams, N. G. Green, N. K. Yip and S. T. Wereley, “Optically modulatedelectrokinetic manipulation and concentration of colloidal particles near an electrode surface”, Langmuir, 26 , 5262 (2010)

12. S. J. Williams, A. Kumar , N. G. Green and S. T. Wereley, “Optically induced electrokinetic concentration and separation of colloids”, J. Micromechanics and Microengineering, 20 , 015022 (2010) (IOP Select; also Highlights of 2010 Paper )


11. S. J. Williams, A. Kumar , N. G. Green and S. T. Wereley, “A simple, optically induced electrokinetic method to concentrate and pattern nanoparticles”, Nanoscale, 1 , 133 (2009)

10. A. Kumar , S. J. Williams and S. T. Wereley, “Experiments on opto-electrically generated microfluidic vortices”, Microfluidics and Nanofluidics, 6 , 637(2009)


9. S. J. Williams, A. Kumar  and S. T. Wereley, “Electrokinetic patterning of colloidal particles with optical landscapes”, Lab-on-a-chip, 8 , 1879 (2008)

8. H-S. Chuang, A. Kumar  and S. T. Wereley, “Open optoelectrowetting droplet actuation”, Applied Physics Letters,93 , 064104 (2008)

7. A. Kumar , V. Gorti, H. Shang, G. U. Lee, N. K. Yip, S. T. Wereley, “Optical diffusometry techniques and applications in biological agent detection”, Journal of Fluids Engineering, 130,

2005 & earlier

6. S. Chakraborty and A. Kumar , “On the transport mechanisms of falling crystals detached from the freezing front during solidification of a hypereutectic binary mixture”, Physical Review Letters,95 , 024504 (2005)

5. A. Kumar , S. Banerjee and D. P. Lathrop, “Dynamics of a piecewise smooth map with singularity”, Physics Letters A, 337 , 87 (2005)

4. A Kumar , D. Sahoo , S Chakraborty and N. Chakraborti, “Gas Injection in Steelmaking Vessels: Coupling a Fluid Dynamic Analysis with a Genetic Algorithms Based Pareto-optimality”, Materials and Manufacturing Processes, 20 , 363 (2005)

3. S. Ganguly, A. Kumar  and S. Chakraborty, “Numerical Investigation of Chaotic Mixing in Gas Stirred Steel Ladles”, ISIJ International, 44 , 1960 (2004)

2. A. G. Banerjee, A. Kumar,  S. Tejavath and A. R. Choudhury, “Adaptive Slicing with Curvature Considerations”, International Journal of CAD/CAM, 3 , 31 (2003)

1. A. Kumar , A. G. Banerjee, S Paul, A Roy Choudhury, “Maximization of slice height with uniformity in surface roughness in the direct slicing of freeform surfaces”, Journal of Engineering Manufacture, 217 , 765 (2003)

Invited Non-refereed Journal Publications

2. A. Haque and A. Kumar, “Hybrid opto-electric techniques for molecular diagnostics”, Expert Review of Molecular Diagnostics, 12 , 9 (2012) (Invited Editorial )

1. S.J. Williams, A. Kumar , S.T. Wereley, “Optically induced electrokinetic patterning and manipulation of particles”, Phys. Fluids, 21 , 091104 (2009) (Top 20 monthly most downloaded – October 2009 )


1. H-S. Chuang , A. Kumar, S. T. Wereley, “Open Optoelectrowetting Droplet Actuation Device and Method”, US Patent # 8,753,498

Book Chapters:

10. I. Biswas, A. Kumar and M. Sadrzadeh, “Microfluidic membrane filtration systems to study biofouling”, Microfluidics and Nanofluidics, Editor: M. S. Kandelousi, Intechopen (2018)

9.  H-S. Chuang, H-Y. Ku, F-T. Li, A. Kumar, J-C. Wang and K-C. Wang, “Optoelectrokinetic manipulation for cell analysis”, Essentials of Single Cell Analysis, Editors: F-G. Tseng and T. S. Santra, Springer (2016)

8.  H-S. Chuang, A. Kumar , S J. Williams, S. T. Wereley, “Optoelectrically-Enabled Multiscale Manipulation”, Encyclopedia of Nanotechnology, Editor: B. Bhushan, Springer, New York (2012)

7. A. Haque and A. Kumar , “Nanochannels for nanofluidics – Fabrication Aspects”, Encyclopedia of Nanotechnology, Editor: B. Bhushan, Springer, New York (2012)

6. R. Ghosh, A. Kumar , P. P. Mukherjee, “Micro/nano transport in microbial energy harvesting”, Encyclopedia of Nanotechnology, Editor: B. Bhushan, Springer, New York (2012)

5. S. Neethirajan, D. Karig, A. Kumar , P. P. Mukherjee, S. T. Retterer, M. J. Doktycz “Biofilms in microfluidic devices”, Encyclopedia of Nanotechnology, Editor: B. Bhushan, Springer, New York (2012)

4. A. Kumar , S. J. Williams, N. G. Green, S. T. Wereley, “Opto-electric particle manipulation”, in Microfluidics and Nanofluidics Handbook, Editors: S. K. Mitra and S. Chakraborty, CRC Press Taylor and Francis (2011)

3. H-S. Chuang, A. Kumar , S. T. Wereley, “Optical flow characterization- micro particle image velocimetry (μPIV)”, in Methods in Bioengineering: Biomicrofabrication and biomicrofluidics, Editor: J. D. Zahn, Artech House, Boston (2010)

2. A. Kumar , A. H. Ewing, S. T. Wereley, “Optical tweezers for manipulating cells and particles”, in Encyclopedia of Microfluidics and Nanofluidics, Editor: D. Li, Springer, New York (2008)

1. P. Chamarthy, A. Kumar , J. Cao, S. T. Wereley, “Fundamentals of Diffusion in microfluidic systems”, in Encyclopedia of Microfluidics and Nanofluidics, Editor: D. Li, Springer, New York (2008)

Other publications

3. T. Ghosh, S. Bhaduri, C. Montemagno, A. Kumar, “Sporosarcina pasteurii can form nanoscale crystals on cell surface”,

2. P. Barai, A. Kumar, P.P. Mukherjee, “Mesoscale elucidation of biofilm shear behaviour”, arxiv:1509.03926

1. N. Gupta, S. K. Mitra, S. Das and A. Kumar, “Deformation of an elastic body in low Reynolds number transport: Relevance to biofilm deformation and streamer formation”, arXiv:1501.02417

Personal Essays from Prof. Kumar

Prof. Kumar’s Blog